Patents by Inventor Motonari Udo

Motonari Udo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9821590
    Abstract: In accordance with one embodiment, a color erasing apparatus comprises a conveyance path, a color erasing section and a control section. The conveyance path conveys a sheet. The color erasing section erases the color of an image formed with color erasable recording agent serving as recording agent containing coloring agent the color of which can be erased by heating. The control section carries out a control, in a case where the image formed on the sheet is not an image formed with the color erasable recording agent, so that the sheet is not subjected to a color erasing processing by the color erasing section.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: November 21, 2017
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki, Yasuhito Noda
  • Patent number: 9798260
    Abstract: Provided is a decolorizable toner including a binder resin and colorant particles which contain a color developable compound, a color developing agent, and a decolorizing agent, and have a capsule structure coated with an outer shell, wherein the binder resin is contained in an amount of 60 to 80% by mass with respect to the total amount of the toner components.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: October 24, 2017
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda
  • Patent number: 9757969
    Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a non-decolorizable material, and a second image forming unit configured to form a second image to be transferred to the sheet with a decolorizable material. At least a part of the second image transferred to the sheet is formed on the first image transferred to the sheet.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: September 12, 2017
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Motonari Udo, Masahiro Ikuta, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara
  • Publication number: 20170100954
    Abstract: In accordance with one embodiment, a color erasing apparatus comprises a conveyance path, a color erasing section and a control section. The conveyance path conveys a sheet. The color erasing section erases the color of an image formed with color erasable recording agent serving as recording agent containing coloring agent the color of which can be erased by heating. The control section carries out a control, in a case where the image formed on the sheet is not an image formed with the color erasable recording agent, so that the sheet is not subjected to a color erasing processing by the color erasing section.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 13, 2017
    Inventors: Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki, Yasuhito Noda
  • Publication number: 20170080737
    Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a non-decolorizable material, and a second image forming unit configured to form a second image to be transferred to the sheet with a decolorizable material. At least a part of the second image transferred to the sheet is formed on the first image transferred to the sheet.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Applicant: Toshiba Tee Kabushiki Kaisha
    Inventors: Motonari UDO, Masahiro IKUTA, Kazuhisa TAKEDA, Tsuyoshi ITOU, Takayasu AOKI, Takafumi HARA
  • Patent number: 9555657
    Abstract: In accordance with one embodiment, a color erasing apparatus comprises a conveyance path, a color erasing section and a control section. The conveyance path conveys a sheet. The color erasing section erases the color of an image formed with color erasable recording agent serving as recording agent containing coloring agent the color of which can be erased by heating. The control section carries out a control, in a case where the image formed on the sheet is not an image formed with the color erasable recording agent, so that the sheet is not subjected to a color erasing processing by the color erasing section.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 31, 2017
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki, Yasuhito Noda
  • Patent number: 9539843
    Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a non-decolorizable material, and a second image forming unit configured to form a second image to be transferred to the sheet with a decolorizable material. At least a part of the second image transferred to the sheet is formed on the first image transferred to the sheet.
    Type: Grant
    Filed: February 16, 2016
    Date of Patent: January 10, 2017
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Motonari Udo, Masahiro Ikuta, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara
  • Publication number: 20160231662
    Abstract: Provided is a decolorizable toner including a binder resin and colorant particles which contain a color developable compound, a color developing agent, and a decolorizing agent, and have a capsule structure coated with an outer shell, wherein the binder resin is contained in an amount of 60 to 80% by mass with respect to the total amount of the toner components.
    Type: Application
    Filed: April 19, 2016
    Publication date: August 11, 2016
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: TAKAFUMI HARA, Masahiro Ikuta, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda
  • Patent number: 9366983
    Abstract: Provided is a decolorizable toner including a binder resin and colorant particles which contain a color developable compound, a color developing agent, and a decolorizing agent, and have a capsule structure coated with an outer shell, wherein the binder resin is contained in an amount of 60 to 80% by mass with respect to the total amount of the toner components.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: June 14, 2016
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda
  • Publication number: 20160159131
    Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a non-decolorizable material, and a second image forming unit configured to form a second image to be transferred to the sheet with a decolorizable material. At least a part of the second image transferred to the sheet is formed on the first image transferred to the sheet.
    Type: Application
    Filed: February 16, 2016
    Publication date: June 9, 2016
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Motonari UDO, Masahiro IKUTA, Kazuhisa TAKEDA, Tsuyoshi ITOU, Takayasu AOKI, Takafumi HARA
  • Publication number: 20160152061
    Abstract: In accordance with one embodiment, a color erasing apparatus comprises a conveyance path, a color erasing section and a control section. The conveyance path conveys a sheet. The color erasing section erases the color of an image formed with color erasable recording agent serving as recording agent containing coloring agent the color of which can be erased by heating. The control section carries out a control, in a case where the image formed on the sheet is not an image formed with the color erasable recording agent, so that the sheet is not subjected to a color erasing processing by the color erasing section.
    Type: Application
    Filed: January 21, 2016
    Publication date: June 2, 2016
    Inventors: Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki, Yasuhito Noda
  • Patent number: 9291950
    Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a non-decolorizable material, and a second image forming unit configured to form a second image to be transferred to the sheet with a decolorizable material. At least a part of the second image transferred to the sheet is formed on the first image transferred to the sheet.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 22, 2016
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Motonari Udo, Masahiro Ikuta, Kazuhisa Takeda, Tsuyoshi Itou, Takayasu Aoki, Takafumi Hara
  • Patent number: 9277075
    Abstract: In accordance with one embodiment, a color erasing apparatus comprises a conveyance path, a color erasing section and a control section. The conveyance path conveys a sheet. The color erasing section erases the color of an image formed with color erasable recording agent serving as recording agent containing coloring agent the color of which can be erased by heating. The control section carries out a control, in a case where the image formed on the sheet is not an image formed with the color erasable recording agent, so that the sheet is not subjected to a color erasing processing by the color erasing section.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: March 1, 2016
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki, Yasuhito Noda
  • Patent number: 9217941
    Abstract: According to one embodiment, a method of manufacturing an erasable toner includes washing toner particles including therein a coloring material that is erasable by heating and a binder resin to obtain a toner cake having the amount of water of 20% by weight to 60% by weight, and drying the toner cake at 40° C. or more and at a temperature which is lower than the complete color erasing temperature of the toner particles by 30° C. or more.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: December 22, 2015
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Tsuyoshi Itou, Kazuhisa Takeda, Yasuhito Noda, Takayasu Aoki, Masahiro Ikuta, Takafumi Hara, Motonari Udo
  • Publication number: 20150350477
    Abstract: In accordance with one embodiment, a color erasing apparatus comprises a conveyance path, a color erasing section and a control section. The conveyance path conveys a sheet. The color erasing section erases the color of an image formed with color erasable recording agent serving as recording agent containing coloring agent the color of which can be erased by heating. The control section carries out a control, in a case where the image formed on the sheet is not an image formed with the color erasable recording agent, so that the sheet is not subjected to a color erasing processing by the color erasing section.
    Type: Application
    Filed: May 27, 2014
    Publication date: December 3, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Kazuhisa Takeda, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara, Motonari Udo, Takayasu Aoki, Yasuhito Noda
  • Patent number: 9128394
    Abstract: An electrophotographic toner produced by mixing a dispersion of colorant particles containing a colorant and a dispersion of release agent particles containing a release agent and having a volume average particle diameter smaller than that of the colorant particles, aggregating the colorant particles and the release agent particles in the dispersion to produce first aggregates, mixing a dispersion of resin particles containing a binder resin and having a volume average particle diameter smaller than that of the release agent particles in the dispersion containing the first aggregates, and aggregating the first aggregates and the resin particles in the dispersion of the first aggregates and the resin particles to coat the first aggregates with the resin particles, producing second aggregates.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: September 8, 2015
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda
  • Publication number: 20150168875
    Abstract: An image forming apparatus includes a first image forming unit configured to form a first image to be transferred to a sheet with a non-decolorizable material, and a second image forming unit configured to form a second image to be transferred to the sheet with a decolorizable material. At least a part of the second image transferred to the sheet is formed on the first image transferred to the sheet.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 18, 2015
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Motonari UDO, Masahiro IKUTA, Kazuhisa TAKEDA, Tsuyoshi ITOU, Takayasu AOKI, Takafumi HARA
  • Patent number: 8940468
    Abstract: Disclosed is a process for production of a decolorable toner, including: aggregating dispersed fine particles of a color material comprising at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles comprising at least a binder resin comprising a polyester resin to form aggregates in an aqueous medium, adding a reactive polymer having an oxazoline group in to the aqueous medium, and fusing the aggregates in the aqueous medium. As a result, it becomes possible to produce a decolorable toner which suppresses the generation of fine powder due to the release of fine particles of an erasable color material from the toner.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 27, 2015
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Takayasu Aoki, Takafumi Hara, Tsuyoshi Itou, Masahiro Ikuta, Motonari Udo, Koji Shimokusa, Hiroshi Mizuhata
  • Publication number: 20140234768
    Abstract: Provided is a method for producing a toner including: aggregating colorant particles and release agent particles, thereby forming aggregates containing the colorant particles and the release agent particles; aggregating binder resin particles and the obtained aggregates containing the colorant particles and the release agent particles, thereby forming toner particle precursors; and aggregating and fusing the obtained toner particle precursors, thereby forming toner particles, wherein when the average circularity of the toner particles is represented by Rt, Rt satisfies the following formula (1): 0.85?Rt?0.92 (1).
    Type: Application
    Filed: March 13, 2014
    Publication date: August 21, 2014
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda
  • Publication number: 20140212805
    Abstract: Provided is a decolorizable toner including a binder resin and colorant particles which contain a color developable compound, a color developing agent, and a decolorizing agent, and have a capsule structure coated with an outer shell, wherein the binder resin is contained in an amount of 60 to 80% by mass with respect to the total amount of the toner components.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 31, 2014
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takafumi Hara, Masahiro Ikuta, Tsuyoshi Itou, Motonari Udo, Kazuhisa Takeda